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Photoredox catalyzed hydroazolylation of alkenes via phosphoranyl radicals

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00233D, Research Article
Fan Zhu, Zhi Qiao, Na He, Chunxiao Nong, Qiping He, Meilan Xi, Xizhong Song, Jun Lin, Jingbo Chen, Yi Jin
A general protocol for the hydroazolylation of alkenes with N-hydroxyl azoles is reported. These reactions proceed via a phosphoranyl radical, followed by radical coupling of the resulting azole radical to the alkene radical.
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Highly selective separation of toluene/methylcyclohexane based on pagoda[5]arene nonporous adaptive crystals

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00364K, Research Article
Zhongwen Liu, Ming Li, Shuai Fang, Li Shao, Bin Hua, Feihe Huang
Herein the selective separation of toluene/methylcyclohexane based on pagoda[5]arene nonporous adaptive crystals is investigated.
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Recent advances in the metal-catalyzed asymmetric alkene hydrogenation of cyclic conjugated carbonyl compounds

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00227J, Review Article
Min Tan, Bram B. C. Peters, Pher G. Andersson, Taigang Zhou
This review summarizes the recent advances (2016–2023) in the stereoselective metal-catalyzed hydrogenation of cyclic α,β-unsaturated ketones, lactams and lactones since considerable developments were made. Where possible the application of these methodologies in synthesis is outlined.
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Palladium-catalyzed [4 + 4] cycloaddition of 2-pyrones with 2-alkylidenetrimethylene carbonates: access to bridged eight-membered oxygen heterocycles

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00329B, Research Article
Huawei Lin, Biming Mao, Bing Han, Jiayi Luo, Yanqing Ge, Xuerui Zhang, Chang Wang, Hongchao Guo, Chunhao Yuan
A novel palladium-catalyzed [4 + 4] cycloaddition of 2-pyrones with 2-alkylidenetrimethylene carbonates has been developed for the synthesis of bridged eight-membered oxygen heterocycles in good yields and with excellent stereoselectivities.
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Computational insights into the synergistic interplay of ligand and fluorine effects in palladium-catalyzed regiodivergent decarboxylative allylic alkylation

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00147H, Research Article
Shiyu Wang, Hongli Wu, Xiangyang Tang, Genping Huang
DFT calculations were performed to investigate palladium-catalyzed decarboxylative allylic alkylation of allyl difluoro-β-ketoesters. The synergistic effects of ligand and fluorine substituents on regioselectivity were uncovered.
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Chiral guanidine catalyzed cyclization reactions of 1,3-enynes for lactone synthesis: switchable H-bond catalysis

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00374H, Research Article
Yongyan Zhang, Lichao Ning, Tianxin Zhu, Zheng Xie, Shunxi Dong, Xiaoming Feng, Xiaohua Liu
Cyclization and 1,4-conjugate addition/cyclization between 2-activated 1,3-enynes and azlactones were achieved with chiral guanidine-amides for enol-type activation to yield a range of δ-lactone derivatives.
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Enantioselective synthesis of 8-membered lactone derivatives via organocatalytic cascade reactions

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00148F, Research Article
Dong-Sheng Ji, Rui Zhang, Xu-Yan Han, Hai-Long Chai, Yucheng Gu, Xiu-Qin Hu, Peng-Fei Xu
The challenging 8-membered lactone derivatives bearing two vicinal chiral stereocenters were synthesized via a cascade reaction mediated by the chiral squaramide.
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Asymmetric [3 + 2] cycloaddition of donor–acceptor cyclopropanes with azadienes enabled by Brønsted base catalysis

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00002A, Research Article
Shu Li, Zhi-Hong Dong, Si-Yu Dan, Mei-Jun Zheng, Teng Long, Jie Zhan, Qing Zhou, Wen-Dao Chu, Quan-Zhong Liu
A chiral bifunctional Brønsted base-catalyzed enantioselective [3 + 2] cycloaddition of D–A cyclopropanes and azadienes is reported. The protocol features broad substrate scope, mild reaction conditions and high functional group tolerance.
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Organocatalytic formal [4 + 2] cycloaddition of o-quinone-methyl derivatives and 2-isocyanatomalonate diesters for the construction of chroman derivatives with adjacent quaternary chiral centers

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00141A, Research Article
Tong Xiong, Yi-Zhao Xu, Yao Wang, You-Cai Xiao, Fen-Er Chen
An asymmetric organocatalytic formal [4 + 2] cycloaddition/annulation cascade of ortho-quinone methides with 2-isocyanatomalonate diesters has been reported.
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Stereodivergent synthesis of chiral spiropyrazolones through Pd-catalyzed asymmetric sequential hydroalkylation of 1,3-enynes: unusual solvent effects on the enantioselectivity

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00358F, Research Article
Shan Wang, Long Li, Yifei Zheng, Luqing Li, Yingcheng Wang, Fangzhi Peng, Zhihui Shao
Chiral spiropyrazolones were constructed through Pd-catalyzed asymmetric sequential hydroalkylation of 1,3-enynes. Four stereoisomers could be obtained through substrate control and chiral ligand control.
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Vaska's complex–PMHS combination enabled mild and chemoselective reduction of sulfoxides to sulfides with low catalyst loading

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00312H, Research Article
Fang-Fang Xu, Zhong-Lei Ruan, Pei-Qiang Huang
We report a highly efficient, versatile, and chemoselective method for the catalytic reduction of sulfoxides to sulfides under mild conditions.
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Decarbonylative C(sp2)–C(sp2) reductive cross-coupling of aroyl fluorides with aryl bromides by palladium/cobalt co-catalysis

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00305E, Research Article
Chen He, Zhiyong Song, Wei Yao, Rui Lin, Yuanhong Ma
Herein, we report a decarbonylative C(sp2)–C(sp2) reductive cross-coupling of aroyl fluorides with aryl bromides by palladium and cobalt co-catalysis.
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Cyclization reactions of 1,6-dienes and 1,6-enynes by dual cobalt photocatalysis

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00311J, Research Article
Pei-Ting Li, Zi-Fa Shi, Wei Yu
Two triphenylamine-derived organophotocatalysts were developed. Their photocatalytic capacity was exploited to enable the [CoIII]-H-mediated cycloisomerization of 1,6-dienes and reductive cyclization of 1,6-enynes under visible light irradiation.
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Iodine-catalyzed intermolecular 1,2-thio (seleno)amination of alkenes with 1,2,3-triazoles and disulfides (diselenides) in air

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00246F, Research Article
Jian Ji, Xuwen Chen, Zongjing Hu, Cong Guan, Jinhua Liu, Yaqi Deng, Shunying Liu
Iodine-catalyzed 1,2-thio (seleno)amination of alkenes via direct N- and C-centered radical cross-coupling was established to elicit highly regioselective β-triazolized thioalkyl compounds.
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Nickel metallaphotoredox-catalyzed C–O bond activation/Csp2–Csp3 coupling enabled by phosphine

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00310A, Research Article
Jiaxi Fang, Ziheng Jian, Huan Liu, Yuting Wang, Xianbo Yu, Zehuai Mou, Huifei Wang
A novel and general nickel/photoredox dual catalysis platform for benzyl alcohol C–O bond activation/Csp2–Csp3 cross coupling of benzothiazolyl bromide and free alcohol, enabled by the catalytic generation of an alkyl radical, is reported.
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Metal-Free Cascade O-H Double Insertion Between I(III)/S(VI)-Ylides, Carboxylic Acids, and Alcohols: Modular Access to Unsymmetrical α,α-O,O-Substituted Ketones

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00453A, Research Article
Shang-Shi Zhang, Jiaohang Wei, Wen-Xuan Zou, Qiong Hu, Mei-Zhu Bao, Dan-Ting Shen, Lin Xiao, Jia-Lin Song, Xiang Liu
The synthesis of unsymmetrical α,α-O,O-substituted ketones via O-H double insertion is appealing but remains constrained due to the lack of compatible coupling partners or uncontrollable selectivity. Herein, we present a...
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Correction: Stereodivergent and enantioselective total syntheses of isochaetominines A–C and four pairs of isochaetominine C enantiomers: a six-step approach

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO90034K, Correction
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Zhong-Yi Mao, Hui Geng, Tian-Tian Zhang, Yuan-Ping Ruan, Jian-Liang Ye, Pei-Qiang Huang
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Visible-light-mediated catalyst-free synthesis of trifluoromethyl(spiro)-epoxides bearing contiguous quaternary centers

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00184B, Research Article
Jingchuan Lin, Yu Zhang, Jinxin Wang, Xinyu Han, Shenglan Zhu, Tong Li, Yanping Zhu, Wei-Dong Zhang
Herein, we describe a non-covalent complex-mediated epoxidation strategy that can yield highly selective central spiro-epoxides by irradiation with visible light without the need for catalyst addition.
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Unprecedented single-electron-transfer reduction-based N → C acyl migration reactions of imides enabled by redox-neutral photocatalysis

Org. Chem. Front., 2024, 11,2344-2350
DOI: 10.1039/D3QO01955A, Research Article
Linge Huai, Li Zhang, Zhentao Wang, Yewen Fang
N → C acyl migration: in the absence of a base, redox-neutral photocatalyzed acyl migration reactions have been realized via the reaction of N-vinylimides with alkyl radicals derived from alkyl silicates.
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Stereoselective skeletal modification of tryptanthrins to install chiral piperidine-2-ones enabled by Brønsted acid catalysis

Org. Chem. Front., 2024, 11,2171-2177
DOI: 10.1039/D3QO02029K, Research Article
Rong Zeng, Xiang Zhang, Yuan-Yuan Lei, Zhuo-Zhuo Zhang, Min Jiang, Qing-Zhu Li, Jun-Long Li, Bo Han
An asymmetric formal [4 + 2] cyclisation between azlactones and aza-dienes derived from simple tryptanthrins has been developed. With this established protocol, yielding a series of novel piperidine-2-one-fused tryptanthrins with up to >99 : 1 er under mild conditions.
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Iron(III)/quinoxaline-derived N,N-ligand catalyzed oxygen transfer reaction of N-vinyl nitrones through selective 4π-electrocyclization and N–O bond cleavage

Org. Chem. Front., 2024, 11,2277-2282
DOI: 10.1039/D3QO01999C, Research Article
Yan-Jiao Lu, Feng-Lan Lu, Jin-Qi Zhang, Chun-Hua Chen, Cui Liang, Xiao-Pan Ma, Dong-Liang Mo
We describe an iron(III)/quinoxaline-derived N,N-ligand promoted O-transfer reaction of N-vinyl nitrones through selective O-4π-electrocyclization and N–O bond cleavage to prepare a variety of 2,5-dihydrooxazoles in good yields.
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Dynamic kinetic resolution of α-F-β-ketone amides (esters) via Ir/f-diaphos-catalyzed asymmetric hydrogenation

Org. Chem. Front., 2024, 11,2201-2207
DOI: 10.1039/D4QO00125G, Research Article
Pengtao Yang, Dingguo Song, Lingxin Chen, Xianghua Zhao, Yirui Chen, Feiyang Shen, Fei Ling, Weihui Zhong
Highly reactive and highly stereoselective asymmetric hydrogenation of α-F-β-ketone amides (esters) via Ir/f-diaphos-catalyzed dynamic kinetic resolution is reported.
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Iridium-catalyzed reductive γ-lactonization of ortho-acylbenzoic acids in water: sustainable access to phthalides

Org. Chem. Front., 2024, 11,2220-2230
DOI: 10.1039/D3QO02019C, Research Article
Yang Chen, Jingyu Zhang, Hongguang Du, Renshi Luo, Jiaxi Xu, Zhanhui Yang
Iridium-catalyzed reductive γ-lactonization of ortho-acylbenzoic acids in water provides a practical and sustainable route to phthalides.
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Rhodium-catalyzed C–C bond alkenylation and arylation of α-branched N-sulfonyl amines

Org. Chem. Front., 2024, 11,2182-2188
DOI: 10.1039/D3QO02140H, Research Article
Lun Xu, Yucheng Liu, Hang Shi, Lun Li
In this work, we described a rhodium-catalyzed C–C bond cleavage of α-branched amines via β-carbon elimination, then formed a five-membered rhodacycle intermediate, which can be captured by styrene(alkenylation) or silane(arylation).
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Visible light/copper catalysis enabled Heck-like coupling between alkenes and cyclic sulfonium salts via selective C–S bond cleavage

Org. Chem. Front., 2024, 11,2195-2200
DOI: 10.1039/D3QO02009F, Research Article
Xianqin Liu, Xufeng Li, Linyuan Wang, Yongjia Shi, Jian Lv, Daoshan Yang
A Heck-like coupling of cyclic sulfonium salts with alkenes via selective C–S bond cleavage using a copper complex as a photosensitizer through a visible-light-driven redox-neutral process has been developed.
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Selective photochemical synthesis of primary arylamines and symmetric diarylamines via amination of aryl bromides using Ni(NH3)6Cl2 as a nitrogen source and catalyst

Org. Chem. Front., 2024, 11,2313-2318
DOI: 10.1039/D4QO00116H, Research Article
Zhehui Xu, Jianyang Dong, Geyang Song, Fuqiang Kong, Gang Li, Dong Xue
The selective synthesis of primary arylamines and diarylamines via coupling reactions with ammonia as a nitrogen source is still challenging.
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Photo-induced catalyst-free formal carbon insertion of acylsilanes into B–B and B–Si bonds

Org. Chem. Front., 2024, 11,2339-2343
DOI: 10.1039/D4QO00139G, Research Article
Xiongxiong Lu, Qingbin Zhao, Hao Zhang, Pan Xu, Xuenian Chen, Zhenxing Liu
A formal carbon insertion of acylsilanes into B–B and B–Si bonds has been developed. The in situ formed siloxycarbene under blue LED irradiation worked as the intermediate for the reaction. When 2-furyl and 2-thiophenyl acylsilanes were used, the B(pin) ring was enlarged to a six-membered ring.
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Origin of site-selectivity of hydrogen atom transfer in carbohydrate C–H alkylations via photoredox catalysis

Org. Chem. Front., 2024, 11,2269-2276
DOI: 10.1039/D4QO00073K, Research Article
Yujie Ji, Lingfei Hu, Han Gao, Yan-Bo Wu, Xiangying Lv, Gang Lu
Two major factors, i.e., C–H σ orbital energy and C–H BDE, account for the HAT site-selectivity of carbohydrates with the quinuclidine radical cation.
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Fe-catalyzed B–H and Si–H insertion reactions of gem-dihaloalkanes

Org. Chem. Front., 2024, 11,2241-2248
DOI: 10.1039/D4QO00136B, Research Article
Xinyu Wang, Zhaobin Wang
We present an approach involving Fe-catalyzed B–H and Si–H insertion of gem-dichloroalkanes. In contrast to previous strategies, our method uses gem-dihaloalkanes as non-stabilized carbene precursors and operates through a radical reaction pathway.
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Nickel/photoredox-catalyzed carbonylative transformations of α-phosphorus-, α-sulfur-, and α-boron-substituted alkyl halides

Org. Chem. Front., 2024, 11,2297-2305
DOI: 10.1039/D4QO00167B, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Le-Cheng Wang, Xiao-Feng Wu
A novel dual nickel/photoredox catalyzed direct amino- and alkoxycarbonylation of α-heteroatom substituted organohalides has been developed.
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Palladium-catalyzed asymmetric [4 + 3] cycloaddition of acyclic α,β-unsaturated imines with trimethylenemethane donors: access to chiral non-fused azepines

Org. Chem. Front., 2024, 11,2326-2331
DOI: 10.1039/D4QO00064A, Research Article
Ting-Peng Li, Shuixiu Su, Jia-Huan Shen, Meng Zang, Yang-Zi Liu, Quannan Wang, Wei-Ping Deng
An efficient approach for the construction of non-fused azepines in good yields with high enantioselectivity via Pd-catalyzed asymmetric [4 + 3] cycloaddition was developed.
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Advancement in the C–H bond alkylation of (hetero)arenes catalyzed by the most abundant transition metal–iron

Org. Chem. Front., 2024, 11,2397-2417
DOI: 10.1039/D4QO00063C, Review Article
Chandini Pradhan, Benudhar Punji
Advancement in the direct C–H bond alkylation of arenes and heteroarenes using the catalysts based on the most abundant transition metal, iron, is summarized.
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Catalytic intermolecular hydrofunctionalizations of ynamides

Org. Chem. Front., 2024, 11,2351-2374
DOI: 10.1039/D4QO00301B, Review Article
Ying-Ying Zhao, Yu-Jing Jia, Yan-Cheng Hu
This review carefully summarizes the advances achieved in catalytic hydrofunctionalization of ynamides and is categorized by the bond formation type including C−C, C−X, C−O, C−N, C−S, C−P, C−Si, and C−Ge bonds.
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Correction: Cu-catalyzed arylation of S-tosyl peptides with arylboronic acids

Org. Chem. Front., 2024, 11,2418-2418
DOI: 10.1039/D4QO90029D, Correction
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Junjie Ying, Jingrong Huang, Chenguang Liu, Fa-Jie Chen, Chunfa Xu, Fen-Er Chen
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NHC and photoredox catalysis dual-catalyzed 1,4-mono-/di-fluoromethylative acylation of 1,3-enynes

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00372A, Research Article
Jiuli Xia, Ruiyang Ma, Lihong Wang, Jiaqiong Sun, Guangfan Zheng, Qian Zhang
NHC and photocatalysis dual-catalyzed mono/difluoromethylative acylation of 1,3-enynes was realized, providing fluormethyl-substituted allenyl ketones. SO2 might play a critical role in achieving high reactivity and selectivity.
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Cr-mediated Photocatalytic Decarboxylative Coupling of alpha-Oxo Acids with Benzylic Pyridinium Salts

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00475B, Research Article
Jia Cao, Yan Liu, Zhixiang Wang, Le Liu
Herein, we report the chromium/photoredox dual catalytic synthesis of ketones using α-oxo acids with benzylic pyridinium salts. This reaction proceeded by photocatalytic generation of acyl radical from α-oxo acids and...
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Concise synthesis of succinimide-fused densely 1,3-cyclohexadienes via Co-catalyzed [2+2+2] cycloaddition of 1,6-diynes and maleimides

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00435C, Research Article
Jinhui Cai, Kaili Cen, Ziyi Zhai, Yuan Liu, Jiahao Wei, Mixia Ouyang, Guojun He, Shuyu Huang, Feng Zhao
Herein, we report a new route towards succinimide-fused densely 1,3-cyclohexadienes through the reaction of 1,6-diynes with electron-deficient alkenes under cobalt catalysis. This method shown high efficiency, wide substrate scope, good...
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Cobalt-catalysed Csp3–Csp3 cross-coupling of benzyl Katritzky pyridinium salts with Callyl–O electrophiles

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00402G, Research Article
Mengyu Gao, Corinne Gosmini
Different allylbenzyl derivatives are synthesized by Co-catalyzed reductive cross-coupling from functionalized benzyl Katritzky pyridinium salts and various allylic acetates, ethers or carbonates in moderate to good yields under mild conditions.
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Metal-free photoinduced denitrogenative alkylation of vinyl azides with alkyl radicals toward ketones

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00280F, Research Article
Hui Yin, Siqi Jian, Xiujuan Feng, Ming Bao, Xuan Zhang
A metal-free method for the synthesis of ketones via a visible-light induced denitrogenative alkylation of vinyl azides with alkyl radicals is presented.
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Copper-catalyzed oxidative sulfenylation and alkylation of indolin-2-ones for direct construction of sulfur-substituted quaternary carbons

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00491D, Research Article
Yun-Hao Zhang, Yi-Nuo Wang, Zi-Yu Liu, Si-Han Zheng, Guang-Lin Li, Dexin Feng, Da-Zhen Xu
A rapid and green one-pot access to S-substituted quaternary carbon centers from commercially available feedstock chemicals has been established, providing complex molecules with high chemoselectivity by the use of air as the terminal oxidant.
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Base- and metal-free visible-light driven site-selective α-C(sp3)–H functionalization reaction of glycine derivatives with hydroxamic acid derivatives

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00425F, Research Article
Shiyun He, Hongying Fan, Xue Zhang, Meiling Ye, Jian Chen, Jinyu Hou, Tianle Huang, Li Guo, Guanghui Lv, Yong Wu
A visible-light-mediated radical–radical cross-coupling reaction between hydroxamic acid and N-phenyl glycine derivatives under base and metal free conditions is reported. A series of unnatural amino acids and peptides were obtained in good to excellent yields with good chemo-selectivity.
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Catalytic Ortho C-H Methylation and Trideuteromethylation of Arylthianthrenium Salts via the Catellani Strategy

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00506F, Research Article
Chen Chen, Xiao-Xu Zhang, Zi-Yi Wang, Chunjie Ni, Bolin Zhu
We reported a Pd/NBE cooperative catalyzed ortho C−H methylation and trideuteromethylation of arylthianthrenium salts, enabling the efficient synthesis of a wide variety of (trideutero)methylated arenes in moderate to good yields....
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NHC-Catalyzed Stereoselective Synthesis of Spirooxindole Lactones by in situ Generated Oxindole-embedded o-Quinone Methides and Aldehydes

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO00347K, Research Article
Zhengqiang Cao, Fang Hu, Yunpeng Chu, Jiaxue Pei, Xin-Ping Hui
A novel N-heterocyclic carbene-catalyzed asymmetric [4 + 2] annulation of in situ generated oxindole-embedded o-quinone methides with aldehydes has been developed for the assembly of complicated spirooxindoles. The methodology provides...
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Palladium-catalyzed and ligand-controlled divergent cycloadditions of vinylidenecyclopropane-diesters with para-quinone methides enabled by zwitterionic π-propargyl palladium species

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00368C, Research Article
Jia-Hao Shen, Yong-Jie Long, Min Shi, Yin Wei
A palladium-catalyzed and ligand-controlled divergent synthesis of spiro-cyclohexadienones from p-quinone methides and VDCP-diesters was realized via zwitterionic π-propargyl palladium species and the mechanism was clarified by DFT calculations.
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Selective nickel-catalyzed disulfuration of alkyl halides with di/trithiosulfonates

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00411F, Research Article
Lulu Liu, Jiaqi Hou, Yingying Ma, Hongwei Wang, Yu Zhong, Fangcan Liang, Luyao Wang, Qingling Wang, Ji-Quan Liu, Wen-Hua Xu, Dianhu Zhu
Selective reductive disulfuration of alkyl halides with di/trithiosulfonate reagents was developed through ligand regulation, with key features of broad substrate scope, good tolerance and excellent selectivity to disulfides over trisulfides.
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Diverting the Mannich reaction to access 2,2-disubstituted indolin-3-ones by merging 1,2-aryl migration and copper-catalyzed aerobic oxidation

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00481G, Research Article
Jia-Chen Xiang, Yu-Die Wang, Peng Yuan, Hui-Min Zhu, Tong Lei, An-Xin Wu, Zhixin Liao
Three typical substrates for the Mannich reaction, p-anisidine, aldehyde, and a nucleophile, did not afford the predictable linear Mannich base under an aerobic copper oxidation condition, but rendering a 2,2-disubstituted indolin-3-one product.
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Iridium-catalyzed asymmetric hydrogenation of 5-hydroxypicolinate pyridinium salts under batch and flow: stereodefined access to cis-configurated hydroxypiperidine esters

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00322E, Research Article
Zhi Yang, Shangxian Luan, Linxi Wan, Jingxi Chen, Xiaofang Wei, Pei Tang, Fen-Er Chen
An iridium-catalyzed asymmetric hydrogenation of 2-esteryl-5-hydroxypyridinium salts is reported, providing chiral cis-5-hydroxypiperidine-2-carboxylates in excellent yields with high levels of enantioselectivities and diastereoselectivities.
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Thiourea as a precatalyst for the electron donor–acceptor complex photoactivation platform of oxime esters

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00424H, Research Article
Haichen Mao, Yuting Zhang, Hengrong Cao, Qianqian Shi, Yu Lan, Junbiao Chang, Bo Zhu
A novel electron donor–acceptor (EDA) complex catalysis strategy has been developed using thiourea as a precatalyst under blue LED irradiation. Using 2–5 mol% of thiourea, various nitrogen-containing compounds were successfully synthesized.
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A self-adsorption molecule passivated interface enables efficient and stable lithium metal batteries

Energy Environ. Sci., 2024, Advance Article
DOI: 10.1039/D4EE02903H, Paper
Gongxun Lu, Xinru Wu, Miaofei Huang, Mengtian Zhang, Zhihong Piao, Xiongwei Zhong, Chuang Li, Yanze Song, Chengshuai Chang, Kuang Yu, Guangmin Zhou
Self-adsorbing molecules stabilize electrode interfaces and inhibit solvent decomposition to ensure high-voltage stability of lithium metal batteries.
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India, Russia discuss economic cooperation, facilitating mobility of talent and skills